You are downloading the StepBand AppX file v18.104.22.168 for Windows Phone. StepBand is a free and useful Health & Fitness app: Get notifications on your Microsoft Band during the day telling you to get up and move around. Set what hours of the day you want notifications, how ... You can now download the offline AppX file to install & try it.
Download Locations for StepBand 22.214.171.124 AppX file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline AppX File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline StepBand AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.